/Engine/Source/Runtime/Engine/Public/AudioStreaming.h
Called when an async callback is made on an async loading audio chunk request.
void OnAsyncFileCallback ( [FStreamingWaveData](API\Runtime\Engine\FStreamingWaveData) * StreamingWaveData, int32 LoadedAudioChunkIndex, [IBulkDataIORequest](API\Runtime\CoreUObject\Serialization\IBulkDataIORequest) * ReadRequest )